On Vegas night, the couples dance to some of the most iconic songs from hit Las Vegas shows; one couple will be eliminated; Julianne and Derek Hough perform a number from their upcoming tour.
The seven remaining couples perform dances that capture the spirit of diverse movie genres; stars from "Descendants 2" perform; guest judge Mandy Moore.
The judges each pair up with a couple and assign the couple a specific challenge; Cheryl Burke returns to the dance floor for a special performance; Calum Scott performs.
The couples attempt to capture the spirit of a specific movie genre, performing a paso doblé, jazz, rumba, Argentine tango, samba, jive or quickstep; a couple is eliminated.
The six remaining couples perform a regular couples dance and a special trio dance, in which a past season's winner or finalist is paired with each couple to compete; a couple is eliminated.
All 13 couples return for the opening number; the three remaining contestants perform two dances; musical performances from Kelsea Ballerini, Lindsey Stirling, Becky G, and Jordan Fisher and Debbie Gibson; the champion is named.